Has anyone implemented a Float8 / Quarter type?

Using Swift
16

The following seems to be true for all standard Float

  • FloatX(1.0).exponentBitPattern) == (1 << (FloatX.exponentBitCount - 1) - 1)
  • FloatX.greatestFiniteMagnitude > (1 << FloatX.significandBitCount)
  • FloatX.significandBitCount > FloatX.exponentBitCount

So, there could more hidden requirements in the FloatingPoint protocol implementation.

Making the protocol implementation to support all possible variants of exponentBitCount, significandBitCount and _exponentBias would likely be unwise as only the one supported by the hardware are really useful in real life (IMHO). Which is why I did not blame the random() implementation.

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